Acetylene-generating lamp.



0. WILLIAMS 62: E. G. BAKER.

AGETYLENE GENERATING LAMP.

APPLICATION FILED JULY 29, 1914.

Patented Mar. 23, 1915.

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OSCAR WILLTAMS AND ELBERT C.- IBAKER, OF SULLIVAN, INDIANA.

AGETYLENE-GENERATING LAMP.

Specification of Letters Patent. Patented Mar, 23, 1915 Application filed J uly 29, 1914. Serial N 0. 853,865.

To all whom it may concern:

Be it known that we, OSCAR WILLIAMS and ELBERT C. BAKER, citizens of the United States, residing at Sullivan, in the county of Sullivan and State of Indiana, have invented certain new and useful Improve ments in Acetylene-Generating Lamps, of which the following is a specification.

The acetylene generating lamp which is the subject matter of the present application for patent is designed more particularly for the use of miners and others working underground, and'its object is to provide a lamp of novel construction which permits renewal of the carbid container without the flame being extinguished. This object is attained by means of a combination and arrangement of parts to be hereinafter described and claimed, reference being had to the accompanying drawing, in which Figure 1 is a central vertical section of the lamp, and Fig. 2 is a similar view showing a slightly modified water-feed valve structure.

Referring specifically to the drawings, the

lamp is composed of three parts, to wit: a carbid container 10, a cap 11 for said container, and a water receptacle 12. v These three parts are separately connected. The carbid container forms the base of the lamp and has a threaded neck 13 on which the cap is screwed. In the top of the cap is a depression 14 which is screw-threaded and into which screws the reduced bottom portion 15 of the water receptacle. Any other connection permitting separation of the carbid container, the cap and the water receptacle may be provided. The cap has a bottom flange 16 between which flange and the top of the carbid receptacle is interposed a gasket 17. The carbid container may be filled upon removal of the cap. The carbid container 10 and the cap 11 are in open com munication, and the latter is fitted with a burner nipple 18 provided with a tip 19.-

Between the bottom of the part 15 and the opposite portion of the wall formingthe depression 14 is interposed a gasket or washer 20. From the center of the depressed portion 14 of the cap 11 depends a tube 21 which opens into the depression and has a seat at its lower end for a valve 22, said seat and valve being located in the carbid container 10. The valve is provided with a closing spring 23 located in the tube 21 between the valve seat and an abutment 24 on .vent escape of gas.

the upper end of a stem 25 passing through the tube and carrying the valve. The top of the water receptacle 12 has a boss 26 the center of which is internally threaded to receive a screw-plug 27 having a milled fingerpiece 28 to facilitate its manipulation. The

screw-plug carries a depending stem 29 which extends downward throughthe Water receptacle and through a central opening 30 in the bottom of the reduced portion 15 of said receptacle. The lower end of the stem has an enlarged conical portion 31 serving as a valve plug anddesigned to close the opening 30. The stem is in line with the valve stem 25 and is designed to engage the upper end thereof to unseat the valve 22.

In operation, the carbid container 10 and the water receptacle 12 being filled, said parts and the cap 11 are connected as described, and shown in'Fig. 2. The plug 27 is now operated to bring the stem 29 down against the upper end of the valve stem 25,

and upon continuing to screw the plug downthe valve 22 is unseated, and the valve plug 31 is also carried out of the opening 30. Water from the receptacle 12 is now free to pass from the same through the opening 30 and down the tube 21, and thence into the carbid container 10. The water feed is readily regulated by operating the plug 27 to open or closethe valve 22 more or less.

The receptacle 12 has a filling nipple 32' closed by a vented cap 33. Whenever it becomes necessary to replenish the carbid supply, an extra container 10 carried by the miner will be applied to the lamp after removal of the empty container. This can be done without leaving the miner in the dark. The water receptacle 12 will be removed leaving the container 10 with the cap 11 in place thereon. Upon removing the Water receptacle, the stem 29 releases, the, valve stem 25, and the valve 22 then closes to pre- The small volume of gas remaining in the container keeps the lamp burning until another container with a cap 11 and a fresh supplyof carbid is applied to the water receptacle, and upon applying this container, the valve 22 of said container is opened as before, whereupon the generation of gas is resumed. In order to guard against the accidental turning of the plug 27 the top of the water receptacle,

against an obstacle as the miner moves plug from striking about, and thus disturbing the adjustment of the water feed.

Fig. 2 shows a slightly modified structure. Here the water receptacle 12 seats squarely on top of the cap 11 and has a depending central nipple threaded to screw into the upper end of a tube 36 opening through the top of the cap 11 and depending into the carbid container 10. The lower end of the tube has a seat for a water feed valve 37 provided with a closing spring 88 which is located on the outside of the tube. The valve has a stem 89 extending upward in the tube and engageable by the lower end of a stem 40 similar to the stem 29 hereinbefore described. The stem- 40 also has a valve 41 which seats in the nipple 35,- and said stem is operated by a screw-plug 27 as before.

The modified form of lamp operates in the same manner as the one first described.

We claim:

1. In an acetylene generating lamp, a carbid container, a cap mounted on said container and provided with a burner nipple, and a water receptacle removably connected to the cap.

2. In an acetylene generating lamp, a carbid container, a cap mounted on said container and provided with a burner nipple, a water receptacle removably connected to the cap, a water-feed valve carried by the cap, and means for operating said valve carried' by the water receptacle, said valve and its operating means being separable.

3. In an acetylene generating lamp, a carbid container, a cap mounted on said container and provided with a burner nipple, a water receptacle removably connected to the cap and having an outlet, a water-feed valve carried by the cap, means for operating said valve carried by the water receptacle, said valve and its operating means being separable, and means carried by the valve operating means for controlling the outlet of the water receptacle.

4-. In anacetylene generating lamp, acar- Copies of this patent may be obtained for 35 at the bottom which is bid container, a cap mounted on said container and provided with a burner nipple, a water receptacle removably connected to the cap, a water-feed tube depending from the cap into the carbid container and having a valve seat in said container, a valve for said seat, a stem extending from the valve, said stem being located in the aforesaid tube, a closing spring for the valve, and a longitudinally adjustable stem carried by the water receptacle and engageable with the aforesaid valve stem to open the valve.

5. In an acetylene generating lamp, a carbid container, a cap mounted on said con tainer and provided with a burner nipple, a water receptacle removably connected to the cap, a water-feed tube depending from the cap into the carbid container and having a valve seat in said container, a valve for said seat, astem extending from the valve, said stem being located in the aforesaid tube, and a longitudinally adjustable stem carried by the water receptacle and engageable with the aforesaid valve stem to operate the valve.

6. In an acetylene generating lamp, a carbid container, a cap mounted on said container and provided with a burner nipple, a water receptacle removably connected to the cap having an outlet, a water-feed tube depending from the cap into the car-bid container and having a valve seat in said container, a valve for said seat, a stem extending from the valve, said stem being located in the aforesaid tube, a longitudinally adjustable stem'carried by the water receptacle and engageable with the aforesaid valve stem to operate the valve, and means carried by said adjustable stem for controlling the outlet of the water receptacle.

In testimony whereof we affix our signatures in presence of two witnesses.

OSCAR WILLIAMS. ELBERT G. BAKER.

Witnesses JOHN l/V. LINDLEY, MARTHA SHAKE.

five cents each, by addressing the Commissioner of Eatents,

Washington, D. C. 

